Knutat KN-STR001-RED
Knutat Cordless Grass Trimmer User Manual
Model: KN-STR001-RED
Introduction
Thank you for choosing the Knutat Cordless Grass Trimmer. This manual provides essential information for the safe and efficient operation, assembly, and maintenance of your new tool. Please read this manual thoroughly before first use and keep it for future reference.
Safety Information
Your safety is paramount. Always follow these general safety guidelines:
- Read the Manual: Familiarize yourself with all controls and proper use.
- Personal Protective Equipment (PPE): Always wear safety glasses or goggles, long pants, and sturdy footwear when operating the trimmer. Gloves are recommended.
- Clear the Area: Before starting, clear the work area of any debris, rocks, or objects that could be thrown by the cutting head.
- Keep Bystanders Away: Ensure children, pets, and other people are at a safe distance (at least 15 meters/50 feet) from the operating area.
- Safety Lock: This product is equipped with a safety lock button to prevent accidental start. You need to press the safety button and switch simultaneously to start the edger. Always engage the safety lock before handling the device, changing blades, or performing maintenance.
- Battery Safety: Use only the provided battery and charger. Do not expose batteries to extreme temperatures or water.
- Inspect Before Use: Check the trimmer for any damaged parts, loose connections, or worn blades before each use.
- Proper Grip: Always hold the trimmer firmly with both hands during operation.
- Avoid Wet Conditions: Do not operate the trimmer in wet grass or rain.
- Storage: Store the trimmer in a dry, secure place out of reach of children.
Components and What's Included
Your Knutat Cordless Grass Trimmer package includes the following items:
- Cordless Grass Trimmer Unit
- 2 x 24V 1500mAh Lithium Batteries
- 1 x Battery Charger
- 1 x Manganese Steel Round Saw Blade
- 4 x Stainless Steel Blades
- 10 x Plastic Blades
- 1 x Wrench
- 1 x Screwdriver
- Safety Goggles
- Gloves

Figure 1: Overview of the Knutat Cordless Grass Trimmer and its complete set of accessories, including various blades, batteries, charger, and safety gear.
Setup and Assembly
Follow these steps to assemble your grass trimmer:
- Attach the Blade: Select the appropriate blade for your task. Use the provided wrench and screwdriver to securely attach the chosen blade to the blade head. Ensure it is tightened properly to prevent loosening during operation.
- Install the Grass Guard: Slide the grass guard onto the main shaft and secure it in place. This guard protects you from debris during operation.
- Connect the Retractable Rod: Insert the retractable rod into the main unit. Ensure it clicks into place or is securely fastened.
- Adjust the Auxiliary Handle: Attach the auxiliary handle to the main shaft. Adjust its position for comfortable and balanced operation, then tighten it securely.
- Insert Battery: Fully charge the battery before first use. Once charged, slide the battery pack into the battery slot on the main handle until it clicks into place.
Video 1: This video demonstrates the assembly process of the Knutat Cordless Grass Trimmer, including attaching the blade, guard, and handle, and inserting the battery.

Figure 2: Detailed diagram showing the main components of the trimmer, including the dual start switch, working button, lithium battery, retractable rod, auxiliary handle, telescopic buckle, motor, machine head rotation button, grass guard, and blade head.
Operating Instructions
Charging the Battery
The trimmer is equipped with two 24V 1500mAh lithium batteries. A full charge provides up to 35 minutes of runtime. The charger completely charges a battery in 2-4 hours or less. Lithium-ion batteries include self-overload and temperature protection for extended life.

Figure 3: Battery charging indicator. A red light indicates charging, and a green light indicates charging is complete.
Starting and Stopping
To start the trimmer, you must simultaneously press the safety lock button and the power switch. Release the power switch to stop the trimmer.
Blade Selection and Usage
The trimmer comes with three types of blades for various cutting needs:
- Plastic Blades: Suitable for clearing soft grass and light trimming. Do not use for thick shrub branches.
- Stainless Steel Blades: Ideal for cutting through lawns, weeds, and small branches.
- Manganese Steel Round Saw Blades: Designed for cutting thicker brushes, branches, and saplings.

Figure 4: Illustration of the three blade types: plastic for soft grass, stainless steel for weeds and small shrubs, and alloy saw blade for thicker branches.

Figure 5: Close-up view of the manganese steel saw blade, stainless steel blade, and plastic blade, highlighting their designs and typical dimensions.
Adjustable Features
- Telescoping Pole: The stainless steel telescoping pole can be adjusted from 33.7 to 46.25 inches (approximately 85.6 cm to 117.5 cm) to fit various user heights for better control and comfort.
- Adjustable Machine Head: Press the adjustable machine head's button to convert the trimmer to an edger in seconds, allowing for easy cutting in hard-to-reach areas and adjusting the head angle from 0-90 degrees.

Figure 6: Demonstrates the adjustable head angle (0-90 degrees) for reaching corners and steps, and the telescopic rod for length adjustment (1-30cm retractable).

Figure 7: Highlights ergonomic features such as the dual control safety switch, anti-collision wire, comfort auxiliary handle, professional-grade telescopic rod, 150-degree ring protective cover, and aluminum alloy plate.
Maintenance
Regular maintenance ensures the longevity and optimal performance of your trimmer:
- Clean After Each Use: Remove grass clippings, dirt, and debris from the cutting head, guard, and motor vents. Use a dry cloth or soft brush.
- Blade Inspection: Regularly inspect blades for sharpness, cracks, or damage. Replace worn or damaged blades immediately.
- Battery Care: Store batteries in a cool, dry place. Do not store fully discharged batteries for extended periods. Charge them periodically if not in use.
- Lubrication: Check the manual for specific lubrication points, if any, and apply appropriate lubricant as needed.
- Storage: Store the trimmer in a dry, secure location, away from direct sunlight and extreme temperatures. Ensure the safety lock is engaged and the battery is removed before storage.
Troubleshooting
If you encounter issues with your trimmer, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Trimmer does not start | Battery not charged; Battery not inserted correctly; Safety lock not disengaged; Power switch not pressed simultaneously with safety button. | Charge battery fully; Re-insert battery securely; Ensure both safety button and power switch are pressed together. |
| Reduced cutting performance | Dull or damaged blade; Excessive grass/debris buildup; Battery low. | Replace blade; Clean cutting head and guard; Recharge battery. |
| Excessive vibration | Damaged or unbalanced blade; Loose components. | Inspect and replace blade if necessary; Tighten all screws and connections. |
| Short battery life | Battery not fully charged; Old battery; Operating in very dense material. | Ensure full charge; Consider battery replacement if old; Reduce load by taking smaller passes. |
Specifications
| Feature | Detail |
|---|---|
| Brand | Knutat |
| Model Number | KN-STR001-RED |
| Power Source | Battery Powered |
| Color | RED |
| Item Weight | 2.6 Pounds (approx. 1.18 kg) |
| Cutting Width | 9 Inches (approx. 22.86 cm) |
| Product Dimensions | 35"L x 7"W (approx. 88.9 cm L x 17.78 cm W) |
| Speed | 6000 RPM |
| Number of Batteries | 2 Lithium Ion batteries (included) |
| No-load time | About 2-3 hours |
| Charging time | About 2 hours |
| Product Material | Steel pipe/aluminum pipe/plastic |
| Blade Length | About 15cm (5.91 inches) |
Warranty and Support
For warranty information or technical support, please refer to the product packaging or contact the manufacturer directly. Keep your purchase receipt as proof of purchase.
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